Metallic packing



(No Model.)

17.1?. SWAIN.

METALLIC PACKING.

Patented Feb. 1, 1898.

@i gf/ 7197,71 .w

UNITED STATES PATENT FREDRIOK F. SVVAIN, OF CHICAGO, ILLINOIS.

M ETALLIC PACKING.

SPECIFICATION forming part of Letters Patent No. 598,123, dated February l, 1898.

l Application filed August 9,1897. Serial No. 647,585. (No model.) i

To @ZZ whom it may concern.-

Be it known that I, FEEDnIcK F. Swain, a citizen of the United States, residing at Ohi cago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Metallic Packing, of which the following is a specifica-tion. y

This invention relates to improvements in metallic packing.

The invention consists, substantially, in the construction hereinafter described, and then more definitely pointed out in the claims.

The figure of the drawing represents a vertical central sectional view of a metallic packing and box as applied tothe rod, part of which rod is broken away at each end.

The metallic packing which will now be described is especially designed for locomotive and marine service, but is Valso well adapted for high-speed and vertical engines and can be applied in almost any situation where a metallic packing is useful.

In the drawing 'the several parts are designated by numerals.

9 designates the shaft to which the packing is to be applied.l

l0 designates the' bor which incloses the packing.

ll designates the bolts which, by proper screw-threaded ends, connect the box with the annular follower 7, adjustment being made by the nuts l2.

6 designates a face-ring upon which the follower-gland 7 bears and which is provided with an undercutor inclined recess for containing the joint-ring 5.

The wearing-rings 3 are made of an alloy of well-known soft or antifriction metal. In

`practice it has been found that the rings wear distances apart, in recesses formed for the purpose in the bottom of the two outside softmetal rings, I place rods or parts of hard metal-such as copper, brass, ccf-which may be of any suitable shape; but aconvenient form is that shown, comprising a portion of a circle. These hard-metal rods are designated by the numeral 14. Again, between the adjacent or proximate edges of the outer soft-m etal wearing-rin gs I place a hard-metal part l5, the lower surface of which is flat and in contact with the shaft and the sides bearing against the metal ring 4in any suitable manner, a convenient fastening being the dovetail joint, as shown. By these means the soft metal of the-wearing-rings is confined so that it cannot be drawn out and the heavy thrust upon the packing is partially taken up by the hard-metal parts, especially by the central part 15.

The soft-metal rings may advantageously be made of the shape shown-that is, three rings are employed, two of which have iat surfaces contacting with the rod, and the rings are approximately pyramidal in cross-section,

so as to provide a similar-shaped recess to receive a third ring, which is also approximately pyramidal in cross-section, but with the apex reversed or turned downwardly. The exterior sides of all the rings are turned outwardly, but the lower portions of the inside edges of the outside rings are shaped to conform to the adjacent surface of the hard-metal central pa'rt l5, `placed between such rings.

2 and l designate reciprocating rings or parts having inclined surfaces to bear against the correspondingly-inclined surfaces of the wearing-rings, and one of which parts, 4, has a horizontal extension to bear upon and hold down the wearing-rings. It will be observed that allof the parts vof the Wearing-rings in contact with 'each other or the reciprocating parts are inclined, so as to be capable of movement relative to each other when wear or adjustment requires it. It will also be noticed that the wearing-rings break joints at every point.

Two spring-rings or spring-'containingrings are arranged at the bottom of the stufiing-box, and inside of each is formed a recess for con` taining a portion of the spring. This recess has its bottom formed at a point an appreciable distance from the bottom surface of the ring, so that the spring is not allowed to come in contact with the rod. The spring is desig- IOO nated by the numeral 13 and the spring-rin gs by the numerals 1 1.

The face-ring 6, in addition to the undercut recess above described for containing the joint-ring 5, has also7 an exterior shoulder,v

which affords a bearing for the same upon the follower-gland, and at such a depth as will serve to retain such face-ring out of contact with the shaft or rod.

By the above construction it Will be seen that all of the parts, excepting the Wearingrings, are held out of contact with the rod.

1t is obvious that many modifications may be made in the details of the construction Without departing from the principles of the invention.

What I claim, and desire to secure by Letters Patent, is

1i In a metallic packing, the combination with a stuffing-box of Wearing-rings mounted in such stuffing-box composed chiefly of soft metal, but having secured to their under surfaces, at suitable distances apart and flush With such surfaces, hard-metal parts, and a central hard-metal part between the two ontrabove the rod and a bearing at the inner end against the reciprocating part; whereby all of the members are supported by the rod and out of contact with the same, excepting the Wearing-rings; substantially as and for the purpose set forth.

In Witness whereof l have hereunto set my hand, this 7th day of August, 1897, in the presence of the subscribing Witnesses.

v FREDRICK F. SvVAIN. Witnesses:

FRANK T. BROWN,

H. H. I-IUMPHREY. 

